You can now sell your prison from the Valuation report screen, and use the profits to start a new prison with a large bank balance.

You require an Accountant on site, a minimum positive valuation of $50,000, and at least 20 prisoners to be eligible for sale.

You can always return to a prison you have previously sold and continue managing it, but you can only sell a prison once.

Note: You cannot sell someone else's prison shared via the Steam Workshop, for obvious reasons.
Note: We are aware this system is highly exploitable, and it will remain that way until we balance the financial side of the game.

The Load / Save dialogs now have the option to sort by "Date modified" as well as by filename. This is very useful for quickly finding your recent prisons. Click on the column headings to toggle the different sorting methods.